Wrench.



' w. R. GREEN.

WRENCH.

, 915. 1,182,763. Patented May 9,1916.

Swuwwtoz Wz'Hz'aJm Ray Green.

Uhil WILLIAM ROY GREEN, 0]? TRINIDAD, COLORADO.

WRENCH.

Specification of Letters Patent.

Patented May 9, 1916.

Application filed August 19, 1915. Serial No. 46,322.

To all whom it may concern:

Be it known that I, WILLIAM ROY GREEN, a citizen of the United States,residing at Trinidad, in the county of Las Anlmas and State of Colorado,have invented new and useful Improvements in Wrenches, of which thefollowing is a specification.

The present invention relates to improvements in wrenches, andespecially to an attachment whereby an ordinary wrench may be easily andquicklv converted into a pipe wrench.

In carrying out my invention I propose to construct an attachment forwrenches to convert a nut wrench into a pipe wrench, said attachmentbeing in the nature of a block or jaw which is positioned upon the shankof the stationary jaw and has a fulcrum engagement with the head of thestationary jaw whereby the same will be automatically forced intogripping position with a pipe or tube when pressure is exerted upon thehandle of the wrench in one direction, and also whereby said pressurewill be relieved, to permit of a ratchet engagement with the said tubeor pipe, when the handle of the wrench is moved in an oppositedirection.

It is also my purpose to provide a wrench attachment in the nature of asupplemental jaw which is loosely positioned upon the shank of astationary jaw of the wrench and which is provided with a depression orpocket to receivethe movable jaw of the wrench, the engaging face of thesupple mental jaw being curved inwardly from its end and provided withtransverse teeth, and its said end having an eccentrically mountedmember which, when contacted by a tube or pipe will revolve to grip thesame as well as to force the supplemental jaw to contact with itsfulcrum engagement with the movable jaw of the wrench to swing the sameand as a consequence force the teeth of the said supplemental jaw intotight engagement with the tube or pipe.

It is a further object of the invention to provide an attachment forwrenches which shall embody the desirable features of simplicity,cheapness, strength, and thorough efficiency in operation.

With the above and other objects in view, the improvement resides in theconstruction, combination and arrangement of parts set forth in thefollowing specification and falling within the scope of the appendedclaims.

The accompanying drawing illustrates a simple and satisfactoryembodiment of my lnvention.

In the said drawings: Figure 1 is a side elevation of an ordinary wrenchwith my improved supplemental aw attached to the movable jaw thereof,Fig. 2 is an elevation of a portion of a Wrench with my auxiliary jawarranged thereon and shown in section, Fig. 3 is a detail sectional viewapproximately on the line 00-00 of Fig. 1, and Fig. 4: is a perspectiveview of the auxiliary jaw.

The wrench is broadly indicated by the numeral 1 and includes astationary jaw 2 having an angular integral shank 3 provided upon one ofits edges with teeth 4 and the movable jaw 5 which includes a carriage 6and which is mounted for slidable movement on the shank 3.

The numeral 7 designates a spring pressed member which is arrangedtransversely in the handle portion of the wrench and which serves as acontact member or abutment for limiting the movement of the sliding jawin the direction of the handle.

The carriage 6 is provided with a transverse slot or cut-away portion toreceive a round nut 8 having peripheral threads 9 which engage betweenthe teeth 4 of the shank 3, the said nut being pivoted to the carriage,as at 10. The nut 8 has its threads 9 cut away longitudinally a distanceslightly in excess of the width of the shank 3, as indicated by thenumeral 11, and when the nut is revolved so as to bring the cutawayportion 11 opposite the teeth 4, the carriage 6 may be quickly adjustedto bring the movable jaw toward or away from the stationary jaw, as willbe readily understood. The screw 8, it will thus be noted need only berotated to adjust the jaw 5 when the said jaw is in close proximity toan object between the same and the jaw 2, but, of course, the threads ofthe nut serve'as a means for sustaining the jaw 5 in an adjustedposition with relation to the jaw 2.

The supplemental or auxiliary jaw is indicated by the numeral 12 and isformed from a block or casting of some suitable hardened metal, such asharveyized or Krupp steel. The supplemental j aw includes a body portion13 which is provided with an opening 145 whereby the same may bearranged upon the shank 3 of the wrench. The side walls of the openingare adapted to snugly engage the side walls of the shank 3, but theopposite .or end walls provided by the said opening 14 are inclined orbeveled from the working face of the jaw 12 to the opposite face or endthereof, as indicated by the numerals 1515. The body 13, below theopening 14, has its working face curved inwardly and provided withtransverse teeth 16, and the end of the said member 12, below the teeth16 is bifurcated and the walls formed by the bifurcation are providedwith alining openings to receive the trunnions 1717 which projecteccentrically from the ends of a toothed roller 18. The teeth 18 of theroller 18 project slightly above the peripheral rounded edges of thebifurcated end portions of the auxiliary jaw 12, and as the rear face ofthe body 13 abuts with the working face of the jaw 5, it will bev notedthat when a tube or pipe is contacted by the teeth 18 of the roller 18,the member 12, being fulcrumed upon the jaw 5, will be swung thereon tobring the teeth 16 into tight or biting engagement with the said tube orpipe. The angular or inclined walls 1515 provided by the opening 14permit the tilting or swinging of the auxiliary jaw 12 and also serve asmeans for limiting the said tilting movement of the auxiliary jaw.

In order to effectively sustain the auxiliary jaw 12 upon the stationaryjaw 5, I provide the portion thereof which I have referred to as theface and which, for distinction, is indicated by the numeral 19, with anangularly projecting portion 20 having therein a depression or pocket 21within which is received the outer portion of the said jaw 5. The pocket21 is of a greater depth than the length of the portion of the jawreceived therein, and the lower portion of the pocket, beyond the jaw 5,is arranged angularly of the said jaw, as indicated by the numeral 22,so that a free rocking movement of the auxiliary aw 12 upon the jaw 5will be afforded.

From the above description, taken in connection with the accompanyingdrawings, it will be noted that I have constructed an extremely simple,cheap and tho-roughly effective device for the purpose intended, onewhich will automatically grip a pipe or Copies of this patent may beobtained for five cents each, by addressing the Commissioner of Patents,

tube when contacted by the said pipe or tube, one which, while.primarily adapted as a removable element, may remain a fixture of thewrench and it is thought that the simplicity and advantages of thestructure will be apparent to those skilled in the art to which suchinvention appertains without further detailed description.

Having thus described the invention, what I claim is:

1. The combination with a wrench including a movable jaw mounted uponthe shank of a stationary jaw, of an auxiliary jaw, said jaw including abody portion arranged upon the shank of the stationary jaw and tiltablewith respect to the said shank, said auxiliary jaw having its workingface curved in wardly and provided with transverse teeth, aneccentrically j ournaled roller member at the end of the working face ofsaid auxiliary jaw, and the rear face of the said auxiliary jaw beingcontacted by the working face of the movable jaw.

2. The combination with a wrench includmg a movable aw mounted upon theshank of a stationary jaw, of an auxiliary jaw loosely mounted on theshank, said auxlliary jaw having its working face provided withtransverse teeth and its end, beyond the teeth, bifurcated, a toothedroller eccentrically journaled in the bifurcation, and the rear face ofthe auxiliary jaw being contacted by the working face of the movable jawat the outer end thereof.

3. The combination with a wrench including a movable aw mounted upon theshank of a stationary jaw, of an auxiliary jaw arranged upon the shankand tiltable with respect thereto, the working face of the auxiliary jawhaving transverse teeth and having its end bifurcated, a toothed rollereccentrically trunnioned in the bifurcation, the rear face of theauxiliary jaw having an angular projection provided with a pocket toreceive the outer end of the working face of the movable jaw, and theinner portion of the pocket being disposed angularly of the said movablejaw. i

In testimony whereof I affix my signature in presence of a witness.

WVILLIAM ROY GREEN.

Witness:

BENNETT S. JoNEs.

Washington, D. 0.

